Meaning of diprotic acid is that , it can loose two hydronium ions (H+) .
For finding how many H+ ions it can give , we have to see its structure.
Here it have only two hydroxyl groups that is -OH groups, and the hydrogen atoms joined to these only are ionisable. So only these can be released as H+ ions. And the acid is diprotic acid.
Published by Ankush Sharma
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